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qemu/atomic.h: rename atomic_ to qatomic_

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clang's C11 atomic_fetch_*() functions only take a C11 atomic type
pointer argument. QEMU uses direct types (int, etc) and this causes a
compiler error when a QEMU code calls these functions in a source file
that also included <stdatomic.h> via a system header file:

  $ CC=clang CXX=clang++ ./configure ... && make
  ../util/async.c:79:17: error: address argument to atomic operation must be a pointer to _Atomic type ('unsigned int *' invalid)

Avoid using atomic_*() names in QEMU's atomic.h since that namespace is
used by <stdatomic.h>. Prefix QEMU's APIs with 'q' so that atomic.h
and <stdatomic.h> can co-exist. I checked /usr/include on my machine and
searched GitHub for existing "qatomic_" users but there seem to be none.

This patch was generated using:

  $ git grep -h -o '\<atomic\(64\)\?_[a-z0-9_]\+' include/qemu/atomic.h | \
    sort -u >/tmp/changed_identifiers
  $ for identifier in $(</tmp/changed_identifiers); do
        sed -i "s%\<$identifier\>%q$identifier%g" \
            $(git grep -I -l "\<$identifier\>")
    done

I manually fixed line-wrap issues and misaligned rST tables.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200923105646.47864-1-stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2020-09-23 11:56:46 +01:00
parent ed7db34b5a
commit d73415a315
133 changed files with 1041 additions and 1018 deletions
Download patch file Download diff file Expand all files Collapse all files

12
util/qemu-timer.c
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@ -170,7 +170,7 @@ void qemu_clock_enable(QEMUClockType type, bool enabled)
bool timerlist_has_timers(QEMUTimerList *timer_list)
{
return !!atomic_read(&timer_list->active_timers);
return !!qatomic_read(&timer_list->active_timers);
}
bool qemu_clock_has_timers(QEMUClockType type)
@ -183,7 +183,7 @@ bool timerlist_expired(QEMUTimerList *timer_list)
{
int64_t expire_time;
if (!atomic_read(&timer_list->active_timers)) {
if (!qatomic_read(&timer_list->active_timers)) {
return false;
}
@ -213,7 +213,7 @@ int64_t timerlist_deadline_ns(QEMUTimerList *timer_list)
int64_t delta;
int64_t expire_time;
if (!atomic_read(&timer_list->active_timers)) {
if (!qatomic_read(&timer_list->active_timers)) {
return -1;
}
@ -385,7 +385,7 @@ static void timer_del_locked(QEMUTimerList *timer_list, QEMUTimer *ts)
if (!t)
break;
if (t == ts) {
atomic_set(pt, t->next);
qatomic_set(pt, t->next);
break;
}
pt = &t->next;
@ -408,7 +408,7 @@ static bool timer_mod_ns_locked(QEMUTimerList *timer_list,
}
ts->expire_time = MAX(expire_time, 0);
ts->next = *pt;
atomic_set(pt, ts);
qatomic_set(pt, ts);
return pt == &timer_list->active_timers;
}
@ -502,7 +502,7 @@ bool timerlist_run_timers(QEMUTimerList *timer_list)
QEMUTimerCB *cb;
void *opaque;
if (!atomic_read(&timer_list->active_timers)) {
if (!qatomic_read(&timer_list->active_timers)) {
return false;
}